More than half a month has elapsed and SMS still doesn't work. The last I heard from anyone at Public Mobile was over 8 day ago. I ended up filing a CCTS complaint. Hope this helps anyone who runs into issues like me and also can't get any response.
I'd like to clarify that I'm asking for suggestions on what provider/package anyone has for me to transfer out to. This is day 10 of SMS not working. The problem does not lie with my phone or app. The @CS_Agent reprovisioned the SIM again 2 days ago and asked me to reboot my phone. This time, I can text 3 out of 6 numbers I tried. All numbers local. Same SIM, same phone, same app, same day. After I reported this result, the @CS_Agent disappeared again for 2 whole days and counting. At this rate of fixing, maybe in 6 years and another 600 reprovisioning I'll be able to text 95% of my contacts.